Brand new desk and PC with atrocious cable mess with an utter lack of cable competence

Greetings cable

I need some help cleaning this up. I've tried simply tying the cables together at the bottom but the cat chews up the velcro straps. I'm not opposed to a cable management tray but I would prefer to avoid drilling/screwing anything into this desk. I have a few issues with some cables, far left monitor cables barely reach the PC while the far right on has an excess making it awkward, I'm fed up and need ideas.

I need some help cleaning this up. I've tried simply tying the cables together at the bottom but the cat chews up the velcro straps. I'm not opposed to a cable management tray but I would prefer to avoid drilling/screwing anything into this desk. I have a few issues with some cables, far left monitor cables barely reach the PC while the far right on has an excess making it awkward, I'm fed up and need ideas.